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US 11,905,847 B1Granted
Airfoil with venturi tube
AssigneeRtx Corporation
InventorsJonas Banhos, James T. Roach, Cheng Gao
Life of this patent
Estimating the term…
Abstract
An airfoil includes an airfoil wall that has a span between first and second radial ends and that defines leading and trailing edges, pressure and suction sides each joining the leading and trailing edges, and an internal cavity. The internal cavity is divided into at least first and second sub-cavities extending over the span. The first sub-cavity defines a venturi tube.
Claims11
An airfoil comprising:
- an airfoil wall having a span between first and second radial ends and defining leading and trailing edges, pressure and suction sides each joining the leading and trailing edges, and an internal cavity,
- the internal cavity being divided into at least first and second sub-cavities extending over the span,
- the first sub-cavity defining a venturi tube, the venturi tube having a convergent-divergent geometry such that a cross-sectional area of the venturi tube decreases from the first radial end to a location along the span at which the cross-sectional area is at a minimum and the cross-sectional area increases from the location of the minimum to the second radial end, and
- airfoil wall being formed of a ceramic matrix composite having ceramic fiber plies that locally build-up a thickness of at least one of the pressure or suction sides of the airfoil wall at the location of the minimum such that the venturi tube tapers in a tangential direction along the span from the first radial end to the location of the minimum and expands in the tangential direction along the span from the location of the minimum to the second radial end.
1 more element
A gas turbine engine comprising:
- a compressor section;
- a combustor in fluid communication with the compressor section;
- and
- a turbine section in fluid communication with the combustor, the turbine section having airfoils disposed about a central axis of the gas turbine engine, each of the airfoils includes:
- an airfoil wall having a span between first and second radial ends and defining leading and trailing edges, pressure and suction sides each joining the leading and trailing edges, and an internal cavity,
- a rib joining the pressure and suction sides and dividing the internal cavity into at least first and second sub-cavities extending over the span, the rib being arced from the first radial end to the second radial end so as to define a curvature,
- the first sub-cavity defining a venturi tube, the venturi tube having a convergent-divergent geometry such that a cross-sectional area of the venturi tube decreases from the first radial end to a location along the span at which the cross-sectional area is at a minimum and the cross-sectional area increases from the location of the minimum to the second radial end, and
- due to the curvature of the rib s the venturi tube tapering in a chordal direction along the span from the first radial end to the location of the minimum and expanding in the chordal direction along the span from the location of the minimum to the second radial end.
5 more elements
Dependencies are inferred from the claim text.